Tectonic Mod is a worldgen datapack and mod that adds more interesting terrain features, improved vegetation and 25+ new biomes and biome variants. This wiki aims to provide more information on the features of this pack as well as other information related to Tectonic (including how to install it and which packs are compatible with it).

Features:

Mountain Ranges

  • Mountains now extend for upwards of thousands of blocks long and hundreds of blocks wide. They can frequently reach heights above y=200.
  • Mountains will no longer generate near inland or have “saddle valleys” around them.

Oceanside Cliffs

  • Cliffs generate where terrain would be generated a steep drop from coastal terrain to ocean.
  • Cliffs tend to form large overhangs.
  • A special variant of cliffs, the Icy Cliffs, has large ice stalagmites and stalagtites underneath overhangs.

Underground Rivers

  • Underground Rivers generate when a river is unable to generate due to terrain being too high (such as where a mountain range is)
  • The rivers may stretch for thousands of blocks and may have divergent paths in them.
  • There are currently 6 underground river biomes for you to find.

Underground River Biomes

  • Lush River
    Moss and Glow Berries hang from the ceiling of this biome. This biome (and all others with the exception of the Coral and Ancient river) have a gravel floor instead of stone floor.
  • Dripstone River
    Dripstone clusters and pillars fill this biome.
  • Lantern River
    Lanterns on chains hang from the ceiling of this biome.
  • Icy River
    The top layer of water in this biome is replaced with ice.
  • Coral River
    The floor of this biome is sand, and coral/sea pickles also generate.
  • Ancient River
    All stone in this biome is replaced with Deepslate. Soul Lanterns hang from the ceiling, and there is no special floor block.
  • Oceanside Cliff Biomes
  • Icy Cliffs
    Ice stalagmites and stalagtites generator under the overhangs in this biome. The top layers of the biome are snow blocks instead of stone.
  • Cold Cliffs
    Identical to the Stony Cliffs, but with water colors matching the Cold Ocean biome.
  • Lukewarm Cliffs
    Identical to the Stony Cliffs, but with water colors matching the Lukewarm Ocean biome.
  • Sandstone Cliffs
    Stone in this biome is replaced with Sandstone, and the top layers of the biome are Sand.

Screenshots:

Tectonic Mod Download Links

Filter by

For Minecraft 26.1.2, 26.1.1, 26.1

Fabric 319 KB Apr 4, 2026
NeoForge 323 KB Apr 4, 2026

For Minecraft 1.21.11

Fabric 312 KB Apr 4, 2026
NeoForge 318 KB Apr 4, 2026

For Minecraft 1.21.10, 1.21.9

Fabric 309 KB Apr 4, 2026
NeoForge 313 KB Apr 4, 2026
Fabric 309 KB Apr 4, 2026
NeoForge 313 KB Apr 4, 2026

For Minecraft 1.21.8, 1.21.7, 1.21.6

Fabric 282 KB Apr 4, 2026
NeoForge 275 KB Apr 4, 2026

For Minecraft 1.21.5

Fabric 217 KB Apr 4, 2026
NeoForge 212 KB Apr 4, 2026

For Minecraft 1.21.4

Fabric, Quilt 250 KB Apr 4, 2026
NeoForge 247 KB Apr 4, 2026

For Minecraft 1.21.3, 1.21.2

Fabric, Quilt 250 KB Apr 4, 2026
NeoForge 247 KB Apr 4, 2026

For Minecraft 1.21.1, 1.21

Fabric 319 KB Apr 4, 2026
NeoForge 322 KB Apr 4, 2026

For Minecraft 1.20.6

Fabric, Quilt 303 KB Apr 4, 2026
NeoForge 296 KB Apr 4, 2026

For Minecraft 1.20.5

Fabric, Quilt 302 KB Apr 4, 2026

For Minecraft 1.20.4

Fabric 290 KB Apr 4, 2026
NeoForge 295 KB Apr 4, 2026
Forge 302 KB Apr 4, 2026

For Minecraft 1.20.2

Fabric 264 KB Apr 4, 2026
NeoForge 245 KB Apr 4, 2026
Forge 250 KB Apr 4, 2026

For Minecraft 1.20.1, 1.20

Fabric 312 KB Apr 4, 2026
Forge 315 KB Apr 4, 2026

For Minecraft 1.19.4

Forge, Fabric, Quilt 803 KB Apr 4, 2026

For Minecraft 1.19.3, 1.19.2, 1.19.1

Forge, Fabric, Quilt 243 KB Apr 4, 2026
Forge 290 KB Apr 4, 2026

For Minecraft 1.18.2

Forge 302 KB Apr 4, 2026
Fabric, Quilt 305 KB Apr 4, 2026

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